Big Tech faces a historic legal showdown. A major trial over social media addiction has begun and could reshape the technology industry. Meta CEO Mark Zuckerberg testified before a jury for the first time over claims that social media harms young people. His testimony came more than four years after leaked internal documents suggested the company knew its platforms could…

US President Donald Trump revoked a 2009 scientific finding that classified greenhouse gases as a threat to public health. The rule had formed the legal foundation for federal actions to reduce emissions from vehicles, power plants, and industry. The White House described the move as the “largest deregulation in American history,” claiming it will lower vehicle costs by $2,400 and…